Stone gutter s



( No Model.)

T. L. WILLIAMS.

STONE GUTTERS SPEGTAGLES.

Patented Apr.'2 8, 1 891.

dm/I154! 7427/7448, l

Unrrnn STATES P T NT Gr mes.

THOMASL. lVILLlAMS, VEST QUINCY, MASSACHUSETTS.

sToNE-cUTT'ERsf's'PEcTAc-LEs.

SPECIFICATION forming part of was Patent No. 451,230, dated April 28, 1 891.

Application filed September 22, 1890. Serial No. 365,723. (No model.)

To all whom, it may concern.-

Be it-known that I, THOMAS L. WILLIAMS,-

of est Quincy, in the county of Norfolk and State of Massachusetts, have invented certaln new and useful Improvements in Stone- Cutters and Millers Spectacles, of which the following is a specification.

This invention relates to stone-cutters or millers spectacles. In spectacles of this class the outer surface of the glass is liable to become chipped and scarred by the impact thereon of particles of stone, &c., and as it is often necessary, owing to defective vision, for the wearers of these spectacles to use lenses in said spectacles, this scarring or chipping of the outer surface is a matter of some expense and trouble, inasmuch as it necessitates frequent renewal of the lenses.

view'of the same.

My invention has for its object to provide a pair of spectacles in which an inner glass or lens 1s covered or protected by an inexpensive outer cover of glass or other transparent material. The invention consists in a pair-of spectacles of the improved construction, which I will now proceed to describe and claim.

Of the accompanying drawings, forming a part of this specification, Figure 1 represents a top view of a pair of spectacles embodying my improvement. Fig. 2 represents a front Fig. 3" represents a vertical section of one of or holders and glasses therein and a side view of one-of the sides sents a side view of one of the bows, showing the cap or cover detached therefrom, said cap being shown in section.

The same letters of-.referenceindicate the same parts in'all the figures.

' spectacles. The sides or temples may be of' In the drawi'ngs,-a a representthe sides or temples, b the bridge, and c c the bows or eyes, constituting the frame-work of apair of theturn-pin..form shown in the drawings, or of the form adapted to hook behind the ears ofthe wearer, and the frame of the spectacles may be of any suitable construction.

In carrying out my invention I provide a frame orholder dq adapted to fit tightly in the interior ofgthetbowc and project -forthe bows and the frames or temples. 'Fig. 4 repre-,

wardly through the samefas shown. most clearly in Fig.

the frame (1, as shown in Fig. 3.

f represents another frame or holder, constituting a cover or cap fittin-g over the frame (Land adapted to be so held by its connection with the frame d that it is in no danger of dropping off while in use, and can yet be removed by the wearer when 'desired.fl The connection between the two frames (1 and f may be of a frictional character, the frame f fitting tightly over the frame (I, or it maybe. by means of a slight screw, both frames being provided with a slight thread, or of anyother suitable character.

g represents an outer guard of glass or any other suitable transparent material, which is set in the cap or cover f, as shown in Figs. 3 and 4. It will be seen that the frames dand f constitute, as it were, a box, of which the flat sides are the. glasses e and g,

The inner glass e may be a simple piece of "plateggr other glass or other suitable transparent material without any lens-power; but if it is necessary for the wearer, by reason of defective vision, to use lenses, the innerglass e may be a lens of any desired power. The outer guard g may be apiece of cheap glass, or it may be a piece of any other'transparent material which may be found suitable for the purpose for which said guard is provided.

The outer frame or cap f being removable from the inner frame d, it will be seen that when the outer guard g has become chipped through, it can be readily removed and an other cover. or guard substitutedtherefor. By 'thismeans it will be seen that the inner and more valuable glass or lens is preserved from harm, while the outer and less expensive glass or cover is rendered easily removable and can be readily replaced at slight cost. I

The frame d, containing the inner glass or lens e,may be permanently affixed to or it. may be integral with the bow of the spectacles, or-it may be reinovable therefrom, and

various other changes may be made in deor scarred, so as to obstruct vision theretails without departing from the natu re and spirit of my invention.

I claim I v 1. V Spectacles having-inner glasses or lenses,

5 and the outer glasses or transparent guards having inwardly-projecting flanges or holders detachably secured to the holders of the inner glasses, as set forth. e

2. Spectacles com prising the frame having the outer glasses or guards having independ= cnt holder's detachably secured to the holders ofvthe inner glasses, as set forth.

In testimony whereof I have signed my name'to this specification, in the presence of two subscribing Witnesses, this 19th day of September, A. D. 1890 THOMAS L. WILLIAMS.

Witnesses:

FREDE. GREEN, HATTIE L. BURRELL. 

